If you are looking for deep and long lasting hydration, this is your bae! The CosRx Hydrium Triple Hyluronic Moisture Ampoule is a viscous moisturizing serum that leaves skin supple and moisturized to provide deep hydration for dry, dehydrated skin types. B5 or Panthenol is the key ingredient in the Hydrium Line from CosRX. This has moisturizing, regenerating and anti-inflammatory effects that is safe to use on all skin types. High molecular Hyaluronic Acid creates an invisible protective barrier on the skin and keeps your skin moisturized. Low molecular Hyaluronic Acid soaks into the skin and increases the skin elasticity and makes you feel plump from the inside.